Beautifully Complex Origami Artworks by Gonzalo Calvo

Although Japan is supposedly the origin or origami, the art of paper folding, Spanish artist Gonzalo Garcia Calvo proves that he's a master of his craft with these beautifully complex origami artworks, each of them created by folding just one piece of paper. One of Calvo's favourite subjects is animals, more of which you can see on his Flickr. Check them out below.